There are problems with the Zetoc web site at: http://zetoc.mimas.ac.uk and access to the database presently. The problem is being investigated as a matter of urgency.
Update (7 September 2009, 10.15): The Mimas Zetoc service is now available. Please accept our apologies to users that have been affected and inconvenience experienced as a result.
If you require any further information or assistance please contact the Mimas Zetoc helpdesk at: zetoc@mimas.ac.uk.